Qhov cuam tshuam ntawm Methyl Hydroxyethyl Cellulose ntawm Epoxy Resin Matrix

Methyl Hydroxyethyl Cellulose (MHEC) yog cov dej-soluble cellulose ether uas tau siv dav hauv kev tsim kho kev lag luam ua cov thickener thiab rheology modifier hauv cementitious systems.Nws yog lub npe hu los txhim kho cov khoom ntws, kev ua haujlwm, thiab adhesion ntawm cov ntaub ntawv cementitious, ua rau nws zoo tagnrho additive rau pob zeb, mortar, thiab grout formulations.Txawm li cas los xij, qhov cuam tshuam ntawm MHEC ntawm cov khoom ntawm epoxy resin matrices tau txais kev saib xyuas tsawg.

Epoxy resins yog chav kawm ntawm thermosetting polymers uas tau siv dav hauv kev lag luam aerospace, tsheb, thiab kev tsim kho vim lawv cov khoom siv zoo heev, tshuaj lom neeg, thiab adhesion rau ntau yam substrates.Txawm li cas los xij, lawv tuaj yeem ua nkig thiab ua rau muaj kev cuam tshuam tsis zoo, uas txwv tsis pub lawv siv hauv qee daim ntawv thov.Txhawm rau daws qhov teeb meem no, cov kws tshawb fawb tau tshawb xyuas kev siv ntau yam khoom ntxiv, suav nrog cellulose ethers, txhawm rau txhim kho qhov tawv thiab cuam tshuam ntawm epoxy resins.

Ntau qhov kev tshawb fawb tau qhia txog kev siv MHEC ua ib qho ntxiv hauv epoxy resin matrices.Piv txwv li, kev kawm los ntawm Kim et al.(2019) tshawb xyuas cov txiaj ntsig ntawm MHEC ntawm cov khoom siv kho tshuab ntawm epoxy-based composites.Cov kws tshawb nrhiav pom tias qhov sib ntxiv ntawm MHEC tau txhim kho cov pob txha toughness thiab cuam tshuam lub zog ntawm cov khoom sib xyaw, nrog rau cov thermal stability thiab dej tsis kam.Cov kws sau ntawv tau hais txog qhov kev txhim kho no rau lub peev xwm ntawm MHEC los tsim cov ntawv cog lus hydrogen nrog epoxy resin matrix, uas ua rau kom muaj kev sib txuas ntawm lub ntsej muag thiab tiv thaiv kev tawg tawm.

Lwm txoj kev tshawb fawb los ntawm Pan et al.(2017) tshawb xyuas cov txiaj ntsig ntawm MHEC ntawm kev kho tus cwj pwm thiab cov khoom siv kho tshuab ntawm epoxy resin system.Cov kws tshawb nrhiav pom tias qhov sib ntxiv ntawm MHEC ncua sijhawm kho thiab txo qhov kub siab tshaj plaws ntawm cov epoxy resin, uas yog vim muaj qhov dej ntawm MHEC.Txawm li cas los xij, qhov sib ntxiv ntawm MHEC kuj tau txhim kho lub zog tensile thiab elongation ntawm kev tawg ntawm cov epoxy resin kho, qhia tias MHEC tuaj yeem txhim kho qhov yooj thiab tawv ntawm epoxy resin matrix.

Ntxiv rau kev txhim kho cov khoom siv kho tshuab ntawm epoxy resin matrices, MHEC kuj tau tshaj tawm tias muaj kev cuam tshuam zoo rau cov khoom siv rheological ntawm epoxy-based systems.Piv txwv li, kev kawm los ntawm Li et al.(2019) tshawb xyuas cov txiaj ntsig ntawm MHEC ntawm rheology thiab mechanical zog ntawm epoxy-raws li nplaum nplaum.Cov kws tshawb fawb pom tias qhov sib ntxiv ntawm MHEC tau txhim kho cov cwj pwm thixotropic ntawm cov nplaum thiab txo qhov kev daws teeb meem ntawm cov fillers.Qhov sib ntxiv ntawm MHEC kuj tau txhim kho lub zog adhesion thiab cuam tshuam tsis kam ntawm cov nplaum.

Zuag qhia tag nrho, kev siv MHEC ua ib qho ntxiv hauv epoxy resin matrices tau pom tias muaj txiaj ntsig zoo hauv kev txhim kho cov khoom siv dag zog, tawv, thiab kev coj tus cwj pwm ntawm lub cev.Lub peev xwm ntawm MHEC los tsim cov ntawv cog lus hydrogen nrog epoxy resin matrix ntseeg tau tias yog ib qho tseem ceeb ntawm kev txhim kho no, uas tuaj yeem ua rau muaj kev sib txuas ntxiv thiab txo kev tawg tawm.Txawm li cas los xij, kev tshawb fawb ntxiv yog xav tau kom nkag siab txog qhov cuam tshuam ntawm MHEC ntawm cov khoom ntawm epoxy resin matrices thiab txhim kho kev siv cov cellulose ether hauv epoxy-based formulations.